package main

import "fmt"

func test(ptr *int) {
	*ptr = *ptr +1
	fmt.Println("test : ", *ptr)
}

func main() {
	num := 10
	ptr := &num
	test(ptr)
	fmt.Println("main : ", num)

	s := "waqsa"
	fmt.Println(s)
	fmt.Printf("%c\n", s[0])

}